dc.contributor.author | Shandera, Sarah | |
dc.contributor.author | Agarwal, Nishant | |
dc.contributor.author | Kamal, Archana | |
dc.date.accessioned | 2018-11-14T14:42:39Z | |
dc.date.available | 2018-11-14T14:42:39Z | |
dc.date.issued | 2018-10 | |
dc.date.submitted | 2017-10 | |
dc.identifier.issn | 2470-0010 | |
dc.identifier.issn | 2470-0029 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/118996 | |
dc.description.abstract | We derive the evolution equation for the density matrix of a UV- and IR- limited band of comoving momentum modes of the canonically normalized scalar degree of freedom in two examples of nearly de Sitter universes. Including the effects of a cubic interaction term from the gravitational action and tracing out a set of longer wavelength modes, we find that the evolution of the system is non-Hamiltonian and non-Markovian. We find linear dissipation terms for a few modes with wavelength near the boundary between system and bath, and nonlinear dissipation terms for all modes. The non-Hamiltonian terms in the evolution equation persist to late times when the scalar field dynamics is such that the curvature perturbation continues to evolve on super-Hubble scales. | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevD.98.083535 | en_US |
dc.rights | Creative Commons Attribution | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0 | en_US |
dc.source | American Physical Society | en_US |
dc.title | Open quantum cosmological system | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Shandera, Sarah, et al. “Open Quantum Cosmological System.” Physical Review D, vol. 98, no. 8, Oct. 2018. © 2018 American Physical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Research Laboratory of Electronics | en_US |
dc.contributor.mitauthor | Kamal, Archana | |
dc.relation.journal | Physical Review D | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2018-10-29T18:00:13Z | |
dc.language.rfc3066 | en | |
dspace.orderedauthors | Shandera, Sarah; Agarwal, Nishant; Kamal, Archana | en_US |
dspace.embargo.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-5430-9837 | |
mit.license | PUBLISHER_CC | en_US |